Good Riddles

Question: There're two people in front of you: your friend and an imposter looking exactly like your friend. There's no way to determine who is who by asking questions, they know the same information about you. You have only one bullet in your gun. If you kill or injure the imposter, you and your friend will be saved, If you're wrong, he'll kill you immediately. How will you know?

Question: What kind of band can't play music?

Question: I never sleep yet sometimes I weep. I can get angry or just be happy. Wherever you go I will follow. No matter what you do I will be there. I can not die. What am I?

Question: You are in a locked room with a burger and a bucket of water. There are 3 doors out to freedom. Door 1: A fire that will burn you to death Door 2: A murdererer with a gun. Door 3: Hungry crocodiles that will eat you. Which door would you choose?

Question: Do you know why the horny female whale bit off the tip of a submarine?